/*!
 * @license
 * Copyright 2016 Alfresco Software, Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


import { AfterViewInit, Component, ElementRef, Input, ViewChild } from '@angular/core';
import {
  ActivitiApps,
  ActivitiFilters,
  ActivitiTaskList,
  FilterRepresentationModel,
  TaskDetailsEvent
} from 'ng2-activiti-tasklist';
import {
  ActivitiProcessFilters,
  ActivitiProcessInstanceDetails,
  ActivitiProcessInstanceListComponent,
  ActivitiStartProcessInstance,
  FilterProcessRepresentationModel,
  ProcessInstance
} from 'ng2-activiti-processlist';
import { AnalyticsReportListComponent } from 'ng2-activiti-analytics';
import { ActivatedRoute } from '@angular/router';
import { Subscription } from 'rxjs/Rx';
import {
  ObjectDataTableAdapter,
  ObjectDataRow,
  DataSorting
} from 'ng2-alfresco-datatable';
import { AlfrescoApiService } from 'ng2-alfresco-core';
import { FormService, FormRenderingService, FormEvent, FormFieldEvent } from 'ng2-activiti-form';
import { /*CustomEditorComponent*/ CustomStencil01 } from './custom-editor/custom-editor.component';

declare var componentHandler;

const currentProcessIdNew = '__NEW__';

@Component({
  selector: 'activiti-demo',
  templateUrl: './activiti-demo.component.html',
  styleUrls: ['./activiti-demo.component.css']
})
export class ActivitiDemoComponent implements AfterViewInit {

  @ViewChild(ActivitiFilters)
  activitifilter: ActivitiFilters;

  @ViewChild(ActivitiTaskList)
  taskList: ActivitiTaskList;

  @ViewChild(ActivitiProcessFilters)
  activitiprocessfilter: ActivitiProcessFilters;

  @ViewChild(ActivitiProcessInstanceListComponent)
  processList: ActivitiProcessInstanceListComponent;

  @ViewChild(ActivitiProcessInstanceDetails)
  activitiprocessdetails: ActivitiProcessInstanceDetails;

  @ViewChild(ActivitiStartProcessInstance)
  activitiStartProcess: ActivitiStartProcessInstance;

  @ViewChild(AnalyticsReportListComponent)
  analyticsreportlist: AnalyticsReportListComponent;

  @Input()
  appId: number = null;

  fileShowed: boolean = false;
  selectFirstReport: boolean = false;

  content: Blob;
  contentName: string;

  layoutType: string;
  currentTaskId: string;
  currentProcessInstanceId: string;

  taskSchemaColumns: any [] = [];
  processSchemaColumns: any [] = [];

  activeTab: string = 'tasks'; // tasks|processes|reports

  taskFilter: FilterRepresentationModel;
  report: any;
  processFilter: FilterProcessRepresentationModel;

  sub: Subscription;
  blobFile: any;
  flag: boolean = true;

  dataTasks: ObjectDataTableAdapter;
  dataProcesses: ObjectDataTableAdapter;

  constructor(private elementRef: ElementRef,
              private route: ActivatedRoute,
              private apiService: AlfrescoApiService,
              private formRenderingService: FormRenderingService,
              private formService: FormService) {
    this.dataTasks = new ObjectDataTableAdapter();
    this.dataTasks.setSorting(new DataSorting('created', 'desc'));

    this.dataProcesses = new ObjectDataTableAdapter(
      [],
      [
        {type: 'text', key: 'name', title: 'Name', cssClass: 'full-width name-column', sortable: true},
        {type: 'text', key: 'started', title: 'Started', cssClass: 'hidden', sortable: true}
      ]
    );
    this.dataProcesses.setSorting(new DataSorting('started', 'desc'));

    // Uncomment this line to replace all 'text' field editors with custom component
    // formRenderingService.setComponentTypeResolver('text', () => CustomEditorComponent, true);

    // Uncomment this line to map 'custom_stencil_01' to local editor component
    formRenderingService.setComponentTypeResolver('custom_stencil_01', () => CustomStencil01, true);

    formService.formLoaded.subscribe((e: FormEvent) => {
      console.log(`Form loaded: ${e.form.id}`);
    });

    formService.formFieldValueChanged.subscribe((e: FormFieldEvent) => {
      console.log(`Field value changed. Form: ${e.form.id}, Field: ${e.field.id}, Value: ${e.field.value}`);
    });

  }

  ngOnInit() {
    this.sub = this.route.params.subscribe(params => {
      let applicationId = params['appId'];
      if (applicationId && applicationId !== '0') {
        this.appId = params['appId'];
      }

      this.taskFilter = null;
      this.currentTaskId = null;
      this.processFilter = null;
      this.currentProcessInstanceId = null;
    });
    this.layoutType = ActivitiApps.LAYOUT_GRID;
  }

  ngOnDestroy() {
    this.sub.unsubscribe();
  }

  onTaskFilterClick(filter: FilterRepresentationModel) {
    this.applyTaskFilter(filter);
  }

  onReportClick(event: any) {
    this.report = event;
  }

  onSuccessTaskFilterList(event: any) {
    this.applyTaskFilter(this.activitifilter.getCurrentFilter());
  }

  applyTaskFilter(filter: FilterRepresentationModel) {
    this.taskFilter = filter;
    if (filter && this.taskList) {
      this.taskList.hasCustomDataSource = false;
    }
  }

  onStartTaskSuccess(event: any) {
    this.activitifilter.selectFilterWithTask(event.id);
    this.currentTaskId = event.id;
  }

  onSuccessTaskList(event: FilterRepresentationModel) {
    this.currentTaskId = this.taskList.getCurrentId();
  }

  onProcessFilterClick(event: FilterProcessRepresentationModel) {
    this.currentProcessInstanceId = null;
    this.processFilter = event;
  }

  onSuccessProcessFilterList() {
    this.processFilter = this.activitiprocessfilter.getCurrentFilter();
  }

  onSuccessProcessList(event: any) {
    this.currentProcessInstanceId = this.processList.getCurrentId();
  }

  onTaskRowClick(taskId) {
    this.currentTaskId = taskId;
  }

  onProcessRowClick(processInstanceId) {
    this.currentProcessInstanceId = processInstanceId;
  }

  onEditReport(name: string) {
    this.analyticsreportlist.reload();
  }

  onReportSaved() {
    this.analyticsreportlist.reload();
  }

  onReportDeleted() {
        this.selectFirstReport = true;
    this.analyticsreportlist.reload();
  }

  navigateStartProcess() {
    this.resetProcessFilters();
    this.reloadProcessFilters();
    this.currentProcessInstanceId = currentProcessIdNew;
  }

  onStartProcessInstance(instance: ProcessInstance) {
    this.currentProcessInstanceId = instance.id;
    this.activitiStartProcess.reset();
    this.resetProcessFilters();
  }

  isStartProcessMode() {
    return this.currentProcessInstanceId === currentProcessIdNew;
  }

  processCancelled(data: any) {
    this.currentProcessInstanceId = null;
    this.processList.reload();
  }

  onSuccessNewProcess(data: any) {
    this.processList.reload();
  }

  onFormCompleted(form) {
    this.taskList.reload();
    this.currentTaskId = null;
  }

  onFormContentClick(content: any) {
    this.fileShowed = true;
    this.content = content.contentBlob;
    this.contentName = content.name;
  }

    onAttachmentClick(content: any) {
        this.fileShowed = true;
        this.content = content.contentBlob;
        this.contentName = content.name;
    }

  onTaskCreated(data: any) {
    this.currentTaskId = data.parentTaskId;
    this.taskList.reload();
  }

  onTaskDeleted(data: any) {
    this.taskList.reload();
  }

  ngAfterViewInit() {
    // workaround for MDL issues with dynamic components
    if (componentHandler) {
      componentHandler.upgradeAllRegistered();
    }

    this.loadStencilScriptsInPageFromActiviti();
  }

  loadStencilScriptsInPageFromActiviti() {
    this.apiService.getInstance().activiti.scriptFileApi.getControllers().then(response => {
      if (response) {
        let s = document.createElement('script');
        s.type = 'text/javascript';
        s.text = response;
        this.elementRef.nativeElement.appendChild(s);
      }
    });
  }

  onProcessDetailsTaskClick(event: TaskDetailsEvent) {
    event.preventDefault();
    this.activeTab = 'tasks';

    const taskId = event.value.id;
    const processTaskDataRow = new ObjectDataRow({
      id: taskId,
      name: event.value.name || 'No name',
      created: event.value.created
    });
    this.activitifilter.selectFilter(null);
    this.taskList.setCustomDataSource([processTaskDataRow]);
    this.taskList.selectTask(taskId);
    this.currentTaskId = taskId;
  }

  private resetProcessFilters() {
    this.processFilter = null;
  }

  private reloadProcessFilters() {
    this.activitiprocessfilter.selectFilter(null);
  }

  onRowClick(event) {
    console.log(event);
  }

  onRowDblClick(event) {
    console.log(event);
  }

}
